A car rental company charges an initial fee plus an additional fee for each mile driven. The charge depends on the type of car: economy or luxury, The charge E (in dollars) to rent an economy car is given by the function E=0.70M+15.95, where M is the number of miles driven. The charge L (in dollars)
to rent
luxury car is given by the function L = 1.15 M+16.40.
Let C be how much more it costs to rent a luxury car than an economy car (in dollars). Write an equation relating C to M. Simplify your answer as much as
possible.